Which varietal is often referred to as "the king of wines, the wines of kings"?

The varietal often referred to as "the king of wines, the wines of kings" is Barolo. This title reflects Barolo's esteemed position in the world of wine, particularly because it is made from the Nebbiolo grape, which is known for producing bold and complex wines that improve with age.

Barolo is celebrated for its rich flavor profile that includes notes of cherries, rose petals, and tar, along with a tannic structure that contributes to its suitability for long-term aging. This wine hails from the Piedmont region of Italy, which has a history of producing high-quality wines that have garnered significant acclaim.

The phrase "the king of wines" highlights its royal reputation, stemming from its association with nobility and its historical significance in the wine trade. While other varietals like Chianti, Brunello, and Verdicchio also have their own merits and popularity, they do not carry the same regal connotation or historical reputation that Barolo does.